10 Best Firm Mattress Under 500 of August 2025

• Queen size bed in a box: For deep sleep you've always dreamed of, this body contouring memory foam mattress delivers; 12 inch mattress comes compressed and rolled in a box for your convenience
• Sleep soundly: Designed with layers of memory foam for firm support and pressure relief, all with an ultra plush feel. The support foam core reduces motion transfer for peaceful, undisturbed sleep
• Maintenance free: Made of hypoallergenic material to keep out dust mites, pollen, mold and pet dander—perfect for kids or adults who suffer from allergies
• Queen size: Measures 59” W x 79” D x 12” H and is compatible with most full bed frames
• Ready for instant enjoyment: Arrives in a box. Simply unbox, cut the protective wrap, unroll and watch the mattress expand. Mattress is safe to sleep on immediately but can take 72+ hours for any risidual odors from packaging to dissipate and for mattress to completely expand based on ambient room temperature, humidity, air pressure & ventilation.

Signature Design by Ashley

• FIRM SUPPORT, PLUS MORE - Our firmest mattress ever is engineered with 10% more heavy gauge steel iCoil pocket innersprings for added stability and extra firmness, ideal for stomach sleepers and plus-sized individuals
• SUPPORTIVE FOAM & POCKET SPRINGS - 1.25 inches soft comfort foam, 1 inch durable high-density foam and 7.5 motion-isolating iCoil pocket springs with a quilted jacquard cover
• CERTIPUR US CERTIFIED - Highest quality foam is CertiPUR-US Certified for durability, performance, and content
• EXPERTLY PACKAGED - Our technology allows this mattress to be efficiently compressed into one box that’s easily shipped and maneuvered into the bedroom; simply unbox, unroll and this mattress does the rest, expanding to its original shape within 72 hours
• Worry-free 10 year limited warranty included; twin mattress supports a maximum weight of 250 lbs, while all other sizes can support up to 500 lbs
• 1 .5 inch top Comfort Foam layer, 1 inch High Density Foam Support layer
• 7.5 inch base layer of over 10% more individually wrapped coils assures no motion transfer
• Extra firm support
• Only the Highest Quality of Foam - Foam is CertiPUR-US Certified for durability, performance, and content
• Worry free 10 year limited warranty

Zinus

• MEMORY FOAM MATTRESS TOPPER—Designed with the same pressure-relieving TEMPUR material found in our mattresses, this 3 inch memory foam mattress topper conforms to your body to deliver more restful sleep.
• ADAPTS TO YOUR BODY—TEMPUR material responds to your body’s temperature, weight, and shape for precise, personalized comfort and support.
• WASHABLE COVER—Say goodbye to dirt, dust, allergens, and dust-mites with a breathable, machine-washable cover.
• MULTI-USE TOPPER—This conforming mattress topper is not only the perfect way to upgrade your own bed, but also enhances comfort in guest rooms, dorm rooms, for travel, and more.
• DURABLE & RELIABLE—More durable than the average memory foam mattress topper, our innovative, proprietary material is designed for years of long-lasting comfort that won’t let you down.

Tempur-Pedic

• SLEEP COMFORTABLE : Our revolutionary gel-infused memory foam topper is engineered to optimize air flow and reduce trapped body heat. Enjoy our breathable, ventilated design that distributes body heat evenly for a more restful sleep
• HELPS PREVENT BODY ACHES CAUSED BY “SINKING” :Our unique gel-infused, 3-inch, high-density memory foam formula aligns your spine, helps relieve common pressure points and prevent you from sinking into foam. Save money, prolong your mattress life and get the quality sleep you deserve
• THE BEST SLEEP YOU’LL EVER GET:The time, research and testing we put into our topper is designed to deliver maximum comfort and restful, uninterrupted sleep all night long. Our breathable mattress topper helps relieve pain, reduce pressure points, as well as, allow for a comfortable, natural sleeping position that will distribute your body heat evenly, so you can wake up feeling refreshed and energized
• COMES WITH A REMOVABLE & WASHABLE COVER Don’t waste your money on a topper that will need to be replaced every year. Unlike other toppers, ours comes with a machine washable, bamboo-rayon cover that features a slip resistant mesh with adjustable elastic straps that keep the topper secured to the mattress and eliminate the hassle of having to constantly re-adjust it
• 60-DAY [NO HASSLE] MONEY BACK GUARANTEE: As a leading USA-based brand, we stand behind everything we make 100% and are committed to providing you with premium products for improving your quality of life. In the unlikely event you change your mind, you’re welcome to return your topper for a FULL refund within the first 60 days after purchase. All ViscoSoft toppers are backed by our outstanding 3 year warranty for manufacturing defects

ViscoSoft

• Full size bed in a box: For supportive, dreamy sleeping, this mattress brings it home with comfortable layers; Plus, it comes in a box, so it's easier than ever to get a better night's rest
• Hybrid mattress: Mattress is designed with gel memory foam, upholstery grade comfort support foam, and 360 individual power packed wrapped coils for maximum lumbar support. Quilt foam gives you that soft, cozy comfort you crave
• Maintenance free: Made of hypoallergenic material to keep out dust mites, pollen, mold and pet dander—perfect for kids or adults who suffer from allergies
• Full size: Measures 53.25" W x 74.5" D x 12" H and is compatible with most full bed frames
• Ready for instant enjoyment: Arrives in a box. Simply unbox, cut the protective wrap, unroll and watch the mattress expand. Mattress is safe to sleep on immediately but can take 72+ hours for any risidual odors from packaging to dissipate and for mattress to completely expand based on ambient room temperature, humidity, air pressure & ventilation.

Signature Design by Ashley

• 8 inch hybrid mattress combine hypallergenic memory foam with the traditional support of an innerspring mattress for a medium-firm feel perfect for kids rooms, guest beds, or an affordable low-profile option
• A plush layer of memory foam helps align the spine to minimize pressure points for increased comfort
• Finished with a cozy knit cover, this mattress is compressed as a bed in a box for convenient delivery and setup
• Available in a medium firm 8 inch profile, a medium 10 inch profile, or a plush 12 inch profile that also features gel infusions and individually encased coils
• Packaging process may leave small brown flecks called carbons in the mattress packaging; These carbons are harmless pieces of plastic and will not stick to your mattress; 10 year limited warranty

Linenspa

• Swiss Ortho Sleep, Most Popular Pocket Encased Coil Spring MATTRESS is a Phenomenal High-Quality 12-Inch Certified Independently & Individually Wrapped Pocketed Encased Coil Pocket Spring Contour MATTRESS. This Swiss Ortho Sleep Mattress is Temperature Sensitive, Body Forming Super Long Lasting High Quality & Extremely Durable, for Many Years of Undisturbed Night's Sleep,
• Each Seperate Pocketed Coil is Individually & Independantly Wrapped to Provide a Support System for an Individualized Comfort by Contouring Precisely to each Person's Body Perfectly. It Also Doesn't Transfer Motion, for a Peaceful Undisturbed Sleep Even if Your Partner Moves at Night.
• Our Signature Motion Isolation Pocketed Encased Coil Mattress is Made for Uptimum Deep Comforting Pressure Relief Sleep. By Relieving The Pressure Points, Pocket Coil Mattresses Allow Blood & Much Needed Oxygen to Circulate & Flow More Efficiently Throughout Our Bodies. This Mattress Also Contains a Bamboo Cover Which Allows Breathability all throughout.
• Swiss Ortho Sleep Always Comes with a 10 Year Warranty,
• It is Delivered to you in an Easy and Convenient Compressed Packing.

Swiss Ortho Sleep

• BRINGS NEW LIFE TO YOUR MATTRESS & MULTI-USAGE- Saving yourself from the uncomfortable bed without spending high replacement cost, you need one Novilla queen mattress topper. Our 4 inch mattress toppers utilizes a 2-Layer design. Includes 1.5" cooling gel memory foam & 2.5" bamboo charcoal foam, adds extra plushness and softens firm mattresses, bounces of your traditional spring mattress, enjoys minimized motion transfer and prolongs your mattress life.Suitable for sofa bed, guest bed, RV, college dorms, Tatami, camping, outdoor Yoga and more.
• PREVENT BODY ACHES, COOLER RESTFUL SLEEP- High-density memory foam conforms to your curves & spinal alignment, helps to relieve pressure points & enhances supportive, prevent shoulder/back/hit pain caused by over sinking or hard mattress. Suitable for side/back/stomach sleepers. Open cell & egg crate foam structure design improves air flow and breathability, regulates temperature & prevents overheating for better sleep.
• CertiPUR-US & OEKO CERTIFIED ENSURE SAFETY - CertiPUR-US certified foam and OEKO-TEX bamboo cover to meet specific standards for no harmful chemicals, without flame retardants ,mercury, less VOC. Simply allow the compressed foam mattress topper queen to fully expand for 24 hours and dissipate the slight new foam smell.
• WASHABLE BAMBOO COVER FOR HEALTH & CARE EASIER- Comes with a zippered bamboo mattress cover for better moisture absorption, breathable, removable and machine washable. 4 corner anti-slip elastic straps design to keep the mattress topper queen from sliding, no need to adjust your bed daily.
• HASSLE FREE REFUND & WARRANTY- Our 4 inch memory foam mattress topper queen offer 30 days money back return policy and a 3-year warranty. Any questions or dissatisfaction, our professional service team will help you out 24/7.

Novilla

• This dual-layer mattress combines 2.5 inch gel infused, ventilated memory foam surface + 7.5 inch high density foam base for a MEDIUM-FIRM feel
• Gel infused memory foam regulates temperature while conforming to the body to ease pressure points
• Temperature-regulating, moisture-controlling TENCEL blend fabric cover creates a comfortable air layer
• Memory Foam is Hypoallergenic and CertiPUR-US certified for safety and performance
• Compressed, rolled, and shipped in a box for simple setup; easily fits through narrow hallways and staircases
• We only use CertiPUR US certified memory foam to ensure your uncompromising safety and comfort
• Dimensions: 60" x 80" x 10"

LUCID

• WE PUT BABY’S SAFETY FIRST: Non-toxic construction is free from harmful materials/chemicals | Mattress meets or exceeds flammability, lead, phthalate and CPSIA testing and does not contain toxic fire retardants
• DUAL SIDED FOR INFANTS AND TODDLERS: At the core 120 heavy duty innerspring coils offers ideal firmness for babies and toddlers | An additional layer of naturally blended cotton layer on toddler side provides enhanced comfort
• WATERPROOF FOR EASY CLEANING: Vinyl cover is waterproof | Full perimeter border wire creates a stable surface throughout the mattress
• GREENGUARD Gold certified: recognizes products with low chemical emissions, contributing to healthier environments | CertiPUR-US certified: made without PBDE fire retardants, lead, formaldehyde and other harmful materials
• MORE IMPORTANT INFO: Mattress comes with limited 35-year warranty | Made in USA | SIZE: 27.5"W x 52"L x <6"H (fits standard cribs and toddler beds) | Square corners to help with a secure fit inside the crib and toddler bed

Serta